Unknown Noise

[Bobalobz]

Morning all, hope you are well.

Just wondering if anyone can help. I've had this noise coming from the front (right) of my 2015 Q7 for several months now. It's intermittent which is a nightmare as both times I've taken it to garage the noise hasn't been there and they can't find anything noticeable wrong from an inspection. The noise can be gone for days or even weeks and then return. I've uploaded an example of the noise. It has on occasion sounded a lot louder although with the same rhythm. Most noticeable when doing lower speeds (between 10-25mph), stops when I brake or go over a speed bump (as I did in the audio clip).

Anyone got any ideas?

Many thanks,

James

[Steve Q]

Could it be from the suspension? 

Has it got air suspension?